Benchtop 1 Micron Refinement Filter Eliminate suspended particles with ease with our 1-micron Refinement filters. Complete with our 1-micron Dutch Weave sintered disk filter plate, these refinement filters provide complete retention of the filter paper,making it impossible for particulate to bypass the paper. Made from the highest-quality 304 stainless steel parts, these benchtop refinement filters are infinitely more robust than your typical porcelain Buchner funnels. They pair nicely with diaphragm vacuum pumps or our spark-free vacuum pumps paired with a cold trap. Processing Power Funnel Capacity: 5.5 Liters/1.45 Gallons Collection Capacity: 11.35 Liters/3 Gallons Specifications 6"x12" Funnel Body 6" 1um Dutch Weave Sintered Disk 6" Hemispherical Ring stand 1/4" Full Bore Ball valve with 1/4" JIC Drain port 3 Gallon Stainless Steel Collection Base with Glass Lid Back Mount Vacuum Gauge 1/4" JIC Butterfly Vacuum Valve 2.5UM 180MM Ashless Filter Paper Nitrile BUNA-N gaskets